Permit nested using without indentation (#31816)
Permit nested using without indentation (#31816)


shimingsg/corefx,wtgodbe/corefx,mmitche/corefx,shimingsg/corefx,Jiayili1/corefx,ptoonen/corefx,ericstj/corefx,BrennanConroy/corefx,shimingsg/corefx,Jiayili1/corefx,shimingsg/corefx,ptoonen/corefx,ViktorHofer/corefx,wtgodbe/corefx,shimingsg/corefx,ericstj/corefx,ViktorHofer/corefx,BrennanConroy/corefx,ericstj/corefx,Jiayili1/corefx,ptoonen/corefx,ViktorHofer/corefx,ptoonen/corefx,ViktorHofer/corefx,mmitche/corefx,Jiayili1/corefx,shimingsg/corefx,BrennanConroy/corefx,ericstj/corefx,Jiayili1/corefx,ViktorHofer/corefx,ptoonen/corefx,Jiayili1/corefx,ptoonen/corefx,mmitche/corefx,ViktorHofer/corefx,ViktorHofer/corefx,Jiayili1/corefx,wtgodbe/corefx,wtgodbe/corefx,wtgodbe/corefx,ptoonen/corefx,ericstj/corefx,mmitche/corefx,mmitche/corefx,mmitche/corefx,ericstj/corefx,mmitche/corefx,shimingsg/corefx,ericstj/corefx,wtgodbe/corefx,wtgodbe/corefx